By 'allow' I mean would you be ok with it, being his decision.
If the mother of his current child(ren) asked him to be a donor and in return he would no longer have to pay child support (at all)?
Just to clarify: This is a hypothetical question we are asking for a short film. We are looking for more-or-less general answers and asking both women and men, in different forums as well as questionnaires and in person. Thank you for the responses